Improvement in lime-kilns



UNITED Y STATES PATENT OFFICE.

IMPROVEMENT IN LIME-KILNS.

Specification forming part of Letters Patent No. 117,222, dated July 18,1671.

To all whom it may concern:

Be it known that l, DAVID H. TURBE'rr, of New Bloomiield, in the countyof Perry and State of Pennsylvania, have invented a new and usefulImprovement in Lime-Kilns; and I do hereby declare that the following isa full, clear, and exact description ofthe construction and opera-tionof the same, reference being had to the accompanying drawing making apart of this specification, in which- Figlue lis a side elevation, Fig.elevation.

Like letters in both 1i gures of the drawing indicate likeparts.

My invention relates to the construction of an arch over the mouth oropening of any ordinary lime-kiln, with a chimney provided with a damperfor regulating the draught, the mouth or opening of the kiln beingaccessible for filling it through sliding doors made in the arch; also,to the. interior construction of the kiln, the lining thereof being madeof brick, as ordinarily, but with the sides perpendicular from the topto a suitable distance below, and then sloping' inwardly to the furnaceat the bottom; the object being to construct the lining of such a shapeas will prevent the lime forming a core in the body of the kiln, which Ieiectually accomplish by making' the lining of the shape aboveindicated, thus facilitating the burning ofthe lime, the lining in thisinstance requiring only one thickness of brick, and lasting iive or sixtimes longer than the double thickness of brick composing the lining ofthe kilns in present use; consequently, while remedying the difiicultyalluded to above, I at the same time effect a saving in cost of materialand labor in the construction thereof 5 the object of the chimney beingalso to facilitate the burning of the lime and carry oii the gas, theescaping of Awhich from the mouth of the ordinary kiln, injuringseriously and many times fatally the person attending to or filling thesame, is entirely obviated by the chimney.

A is the lime-kiln, built of stone, and of the ordinary form ofconstruction. B represents the interior of the kiln, the lining a ofwhich is made perpendicular for a suitable distance down from 2, asectional the top, and then inclined inwardly to the furnace C at thebottom, as seen clearly in Fig. 2. The lining, as hereinbeforementioned, is made of one thickness of brick only, and, although beingbut half the thickness of the lining of the kilns in present use, yetexperience has proven it to be considerably more durable in its nothaving to be renewed near as often as the other when burned out. Thisdiii'erence is owing' to the shape of the old lining being made similarto the interior of an egg-sh ell, the sides sloping' in at the top andbottom, and to the want of a proper draught for feeding the tire, theheat therefrom being unduly concentrated upon the walls of the lining,burning it out and besides causing the lime to form a core in the kiln,all of which will be avoided in this.

An important item in the running of a limekiln is the cost of labor andmaterial consequent upon the renewal of the lining' at various periodswhen burned out; but by its being made as above described, in connectionwith a chimney constructed over the mouth of the kiln to give the properdraught, very considerable of this will thereby be saved.

D is a brick arch, constructed over the mouth ofthe kiln and inclosingitentirely, and provided with sliding doors 1)by which the operator, bysliding them back, can attend to the lilling of the kiln. E is achimney, constructed about eight feet high over the arch, with its tlueextending through it, and provided with a damper, c, for regulating' thedraught.

As the burning or making oi' lime is so well known no explanation of itis here necessary.

This improvement can be easily applied to any of the kilns now in use,and the same roofed or inclosed so as to protect the operator from eX-posure to the weather. This cannot be done with any of the present kilnswithout cutting off the draught.

By an actual demonstration made with this improvement one man will burnone hundred and lifty bushels of lime in the same time and with the sameamount of coal that it takes to burn one hundred bushels without it.

I am aware that it is not new to construct a chimney on :L lime-kiln,the same being shown in the patent of Richard Dol'laldson7 Febrnory 19,1861; therefore I do not claim it; but

Whitt I do claim, and desire to secure by Letters Patent, is-

In the lime-kiln A herein described, the zurangement of the lining a',arch D, chimney E, sliding doors l), and damper c, when alloonstrl'leted and arranged :1s and for the purposes set forth.

As evidence that I claim the foregoing as my invention I have hereuntoset my hand in the presence of two Witnesses.

itnesses: DAVID H. TURBETT.

JOHN R. SHULER, J AMES MOILHENNEY.

